Schlegel und Partner spent few days at Battery Show Europe in Stuttgart last week, speaking with engineers, project developers, and system integrators across the energy storage value chain. The technology has never looked better. The frustration has rarely run higher.
The dominant topic wasn’t chemistry or cost — it was the grid.
Across nearly every conversation, the same bottleneck surfaced: connecting battery storage systems to the grid in Germany is a bureaucratic ordeal with no guaranteed timeline. Developers submit applications and then simply wait — sometimes five, sometimes seven years — with no certainty of when, or whether, their systems will be approved. The technical case is often sound. The load profiles are understood. The demand is real. Yet DSOs remain hesitant, and that hesitancy translates directly into projects that cannot move forward.
What stood out most: this is a distinctly German problem. Comparable markets like Italy and Spain are moving faster, with clearer processes and more predictable outcomes. Germany, despite being Europe’s largest renewables market, is paradoxically one of the harder places to actually deploy storage at scale. The triangle of tension between TSOs, DSOs, and project developers remains unresolved — and the honest consensus from the floor was that only political intervention can break the deadlock.
Beyond the grid debate, the mood was more pragmatic. Supply chains are a known quantity and most integrators have adapted accordingly. The focus is shifting toward reducing single-source dependencies at the component and pack level. Safety — particularly fire protection for large-scale installations — is a growing engineering priority as system sizes continue to scale.
One of the more forward-looking conversations centered on battery second life: repurposing retired EV batteries for stationary storage. With EV adoption accelerating across Europe, the pipeline of retired packs is growing, and industry is beginning to treat this seriously. Both as a circular economy opportunity and as a way to extend battery life through second-life applications, while reducing dependence on primary cell sourcing.
The technology is ready. The demand is there. The remaining bottleneck is largely linked to policy, regulatory frameworks, and market conditions needed to support large-scale adoption.
We’d love to hear your thoughts and are happy to share our perspective in more detail—please don’t hesitate to reach out.
Udita Chauhan
+49 6201 9915 69
Udita.Chauhan@SchlegelundPartner.de
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